Water heater



C. F. WILSON.

WATER HEATER.

APPLICATION FILED III/m14, 1921.

Patented Apr. 4, 1922.

2 SHEETS-SHEET I.

UNITED Mstares earnn'r oFFlce.

' CHARLES r; Winsen, or narines, Terres.

IVATEB, HEATER.

Lat-lace.

highly iinproved'water heater oit the type' that islsulnnerged in wa-ter in a bath tub,

vwash tub, orother like'receptacle; .A 'turther object vot the invention is to provide such a heater that will have an .increased circulation otl the'water through the saine, thereby causing the water toV heat more rapidly, j A Yl'uither feature is to provide 'for a vtree and unobstructed passage o'f the water through'the heater, which will promote cir culation. .Another objectiol' the invention i's-to provide a heater simple in construe tion and comparatively inexpensive to produce.

ri construction designed to carry out the inif'ention will be hereinafter described together with other 'features o't the invention.

.The invention will be more readily understood Ytroni a reading oi" the 'following speci- .l'ication and by reference to the accompanying drawings, in which an example ot the invention is shown and wherein:

Fig. l is a side elevation with a portion broken away, ot a water heater constructed in accordance with iny invention, and dis posed in a bath tub,

`Fig. 2 is a plan view ot the saine,

Fig. 3 is a cross-sectional view taken on the line 3-3 ot Fig. 2,

Fig. 4; is an elevation partly in section ot another 'torni of water heater, constructed in accordance with iny invention and disposed in a wash tub, and

Fig. 5 is a plan view OI" the saine.

ln the drawings the numeral l designates a. bath tub containing water to be heated and in which the heater is placed. The tub or other receptacle in which the heater is placed may contain a `greater or lesser amount of water, provided the top ot the heater is permitted to extend above the water, as is shown in Fig. l.

rectangular hollow base 2 is slightly elevated by means ot a tlange 3, however said base may assume any practical shape. Extending upwardly troni the bottoni oit 'the spcification of Leiters raient.

Patented Apr. 4, 1922.

` Application filed March 14, 1921i Serial No. 452,102.

base is van inner shell el, which forms a cent'ral water channel or well in the heater. A tapering outer shell 6 extends upwardly v troni thetop ofthe said base, thereby form ing a concentric flue 62L betweenthe inner and outer Shells. The outer shell is set. inwardly `troni tlie'edge ot the top ot the base. Draft-"pipes 7 extend upwardly from this marginal portion of the top oi" the baseI and are inclined in harmonyV with said shell. rllhe draft pipes permit the passage4 of air down through the saine into the base.

A plurality oit ports 5 are provided in the flange permitting the water to pass under the base 2 and up into the central channel.. lnthe flue o a plurality of horizontal raV dial tubes 9 are disposed yin staggered rela* tion to each other, the ends o't' the tubes engaging in opposite apertures'i-n thevinner and outer shells, thus permitting` the .water 'troni the central channel to passthrough the said 'tubes to the outside of the heater.

These tubes` are made ot' such size as to per4nv init a tree and rapid passage ot' Athe water as well as to provide ainple heating surfaces. A. gas burner 8 is disposed in the base 2 under the tine, and is supplied with fuel through a t'eed pipe to which is connected a gas supply pipe.

lWhen the heater is in operation a drauglit ot air will be drawn down through the draft pipes 7 into the base 2, thus mixing with the gas emitted loy the burner 8 and causing a more ready combustion. The heat products pass up the tlue 6, thus heating the inner and outer shells l and (5, as well the tubes 9, whereby a large area is exposed thereto. A particular Yfeature of the invention resides in the construction ot the said flue, the area or" which, due to the tapering outer shell, is reduced towards the top, thereby aliording a tendency to accelerate the circulation of the heat. The circulation of air and heat is indicated by the dot-ted line arrows in Fig. 3.

lt is pointed out that water will freely circulate under the base 2 through the ports 5, and pass up into the central channel and out through the tubes 9, as indicated in Fig. B by itull line arrows. As the water circulates in this manner it is obvious that it will be heated in a very short tiine. The large entrance at the bottoni of the channel affords a 'free passage ot the water and a rapid displacement thereof, which makes tor quick heating.

tion is not to be limited thereto.

constructed in accordance with this inven-V In Figs. land 5 I have shown another form of the invention having a generalcylindrical shape and adapted for immersion in vessels of correspondin shape. A cylindrical base 2 has a depenin flange 3 provided with ports 5. A cy indrical inner shell 4 is surrounded by an outer cylindrical shell 6', whereby an annular flue 16 is formed therebetween. A burner 8 is located in the base at the bottom of the flue and is supplied with air by draft pipes 7 mounted on the base; Radial tubes 9 extend across the flue from the inner shell to the outer shell.

The forms of the, invention shown in the drawings are merely for the purpose of illustration, and itis understood that the inven- A vheater tion will be compact, comparatively light in weight, and eas tovhandle.

It is also un erstood that the heater may be made of tin, sheet metal, or any other suitable material, and that various changes in shape and` dimensions, as well as modifications, may be made without departing from the spirit of the invention.

What I claim, is:

1. In a water heater, the combination of a base constituting a combustion chamber, a gas burner disposed in the base, an inner shell extending upwardly from the base, an outer shell extending upwardly from the base, a plurality or radial tubes disposed between the inner and outer shells, and draft pipes mounted on the said base.

2. In a water heater, the combination of a hollow base, a gas burner disposed in the base, an inner shell mounted on the bottom of the base, an outer shell mounted on the top of the base, said outer shell being disposed inwardly of the edge of the base thereby leaving a margin around the top of the base, a plurality of radial tubes disposed between the inner and outer shells, and upright draft pipes mounted on the marginal portion around the top of the base.

3. In a water heater, the combination of a hollow base, a gas burner disposed in the base, a flange depending Afrom the base, a plurality of ports in the flange, an inner shell mounted onthe base, an outer shell mounted on the base, a plurality of radial tubes disposed between the inner and outer shells, and Vdraft pipes mounted on the base.

4. v In a water heater, the combination of a base having a relatively large vertical channel extending through the bottom of the base and a relatively large entrance for admitting water into the channel, a gas burner dis:-`

posed in the base, an inner shell mounted on the base, an outer shell mounted on the base, a plurality of radial tubes disposed between the inner and outer shells, and draft pipes mounted on the base. s

CHARLES F. WILSON. 

